C&O Canal Lock 21 (Swains Lock)
9.3 • Historical landmark
Historical canal lock area offers quiet, secluded atmosphere with flat, easy paths alongside water and trees. Camping spots and a rentable lock house provide overnight options near a busy but small parking lot. The site blends serene waterside scenery with accessible trail entry.
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"Parking is available, but it can be limited and tight."
10
"It's a beautiful, quiet walk along the canal."
3
"It's a fun place to hike and visit."
2
Good to know
1
Parking is very limited, especially on nice days.
2
No ticket is required to enter the area.
3
Camping spots are available by reservation.
10700 Swains Lock Rd, Potomac, Maryland, United States
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